25149
Environmental Monitors on Lobster Traps Database
Environmental Monitors on Lobster Traps (eMOLT)
Data Set
Published / External
9284
Environmental Monitors on Lobster Traps
Project
Completed
The eMOLT project is a non-profit collaboration of industry, science, and academics devoted to monitoring of the physical environment of the Gulf of Maine and the Southern New England shelf. In a series of phases funded by the Northeast Consortium (2001-2008), low-cost strategies have been developed to monitor the environment. While the primary variable is bottom temperature, salinity and current velocity have been measured as well with the help of nearly 100 lobstermen dispersed along the entire New England coast. We hope to extend our existing multi-year time series (as well as our monitoring capabilities), continue integration with the Northeast Regional Association for Coastal Ocean Observing Systems (NERACOOS), and contribute to whatever operational systems are developed for our region in the future.
We expect the primary users of eMOLT data, aside from the lobstermen themselves, will be local ocean circulation modelers. The need for data in initialization, assimilation, and validation of their numerical simulations is becoming more and more obvious. The complex time-varying nature of the Gulf of Maine system calls for incorporating as much data as possible in order to generate realistic flow fields. We hope to supplement the data supplied by NERACOOS by providing modelers with a extensive array of bottom observations as well as Lagrangian drifter tracks. Our hope is that these numerical models will someday help in our understanding of lobster larvae drift and the fate of any particles for that matter, such as Harmful Algal Blooms, along our coast. What are the mechanisms that govern the both the short-term and long-term variability of the GoM ecosystem and can we generate realistic, time-varying, 3-d simulations of these changes?
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
Spatial
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CONNECTICUT
Spatial
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MAINE
Spatial
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MARYLAND
Spatial
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MASSACHUSETTS
Spatial
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEW HAMPSHIRE
Spatial
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEW JERSEY
Spatial
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > RHODE ISLAND
Spatial
Global Change Master Directory (GCMD) Location Keywords
GEOGRAPHIC REGION > NORTHERN HEMISPHERE
Spatial
Global Change Master Directory (GCMD) Location Keywords
OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN
Spatial
Global Change Master Directory (GCMD) Location Keywords
OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > CAPE COD
Spatial
Global Change Master Directory (GCMD) Location Keywords
OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GEORGES BANK
Spatial
Global Change Master Directory (GCMD) Location Keywords
OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MAINE
Theme
bottom temperature
Temporal
continuous
Temporal
primarily fishing season May-Nov
Spatial
New England coast
Spatial
Southern New England Shelf
Stratum
benthic
Northeast Fisheries Science Center
Woods Hole
MA
USA
Data Set
Oracle Database
Weekly
Table (digital)
VEMCO Minilog-II Temperature Recorder
lobster traps
not applicable
33506
eMOLT
eMOLT
Published / External
Completed
Environmental Monitors on Lobster Traps. This is a collection of hourly bottom temperatures (~0.2 degC accuracy) from lobster traps at dozens of fixed locations off the Northeast US beginning in 2001.
Data File
Yes
Environmental Monitors on Lobster Traps. This is a collection of hourly bottom temperatures (~0.2 degC accuracy) from lobster traps at dozens of fixed locations off the Northeast US beginning in 2001.
1
SITE
String
No
No
Active
4-digit code typically denoting participants initial's in first 2 and his/her consecutive site# in second 2
String
2
time
double
No
No
Active
Time (seconds since 1970-01-01T00:00:00Z)
double
3
latitude
float
No
No
Active
Latitude (degrees_north)
float
4
longitude
float
No
No
Active
Longitude (degrees_east)
float
5
depth
float
No
No
Active
Depth (meters)
float
6
sea_water_temperature
float
No
No
Active
Sea Water Temperature (degree_C)
float
Data Steward
2001
2022
Person
Manning, James
James.Manning@noaa.gov
166 Water Street
Woods Hole
MA
02543
USA
508-495-4727
Distributor
2008
Organization
Northeast Fisheries Science Center
NEFSC
166 Water Street
Woods Hole
MA
02543-1026
USA
(508)495-2000
https://www.fisheries.noaa.gov/about/northeast-fisheries-science-center
NEFSC Home Page
Online Resource
8:00 a.m. to 4:30 p.m. Monday - Friday
Metadata Contact
2015
2022
Person
Manning, James
James.Manning@noaa.gov
166 Water Street
Woods Hole
MA
02543
USA
508-495-4727
Originator
2001
2022
Person
Manning, James
James.Manning@noaa.gov
166 Water Street
Woods Hole
MA
02543
USA
508-495-4727
Point of Contact
2023
Person
Maynard, George
george.maynard@noaa.gov
166 Water Street
Woods Hole
MA
02543
US
508-261-5916
-75
-65
45
35
Approximately 70 fixed locations with nearly a decade of hourly time series
Continuing
2001
While some of the data in the archive is from previous projects, the actual eMOLT data starts in 2001.
Geographic 2D
EPSG:4269
NAD83
North American Datum 1983
GRS 1980
6378137
298.257222101
1
Geodetic Latitude
Lat
degree
north
1
Geodetic Latitude
Lat
degree
north
2
Geodetic Longitude
Lon
degree
east
2
Geodetic Longitude
Lon
degree
east
Unclassified
open to all
Served via ERDDAP:
http://comet.nefsc.noaa.gov/erddap/tabledap/eMOLT.html,
the data can be queried according to site code, time, location, and depth.
Alternatively, the data can be accessed directly into programming languages such as MATLAB or PYTHON and example scripts are provided.
some timeout limitations, no absolute restrictions apply although users are asked to voluntarily provide a brief description of how they intend to use the data prior to download.
No restrictions apply.
limited
limited
http://comet.nefsc.noaa.gov/erddap/tabledap/eMOLT.html
2008
Organization
Northeast Fisheries Science Center
2001
2017
https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0162412
2008
Organization
Northeast Fisheries Science Center
NCEI Accession 0162412
http://emolt.org/
Online Resource
HTML
description of the project with many links to results and data
2023-03-31
Maynard, George
Updating metadata following Jim's retirement
2023-03-31
Maynard, George
I can't add myself as the data steward for this dataset because I'm not in the dropdown menu.
Oracle 10g nova database
temperature ~0.2 degC
position ~1km
depth ~5% of water column
VEMCO Minilog II-T Temperature Data Logger:
http://vemco.com/wp-content/uploads/2014/01/minilog2t.pdf
ONSET HOBO TidbiT v2 Water Temperature Data Logger:
http://www.onsetcomp.com/products/data-loggers/utbi-001
temperature <0.1 degC based on near-annual calibration checks
care obviously taken to account for large seasonal cycle
another decade is needed to consider "climatic" time scales but, given the hourly time series, many short term processes can be examined (tide, wind, seasonal, interannual, etc).
temperature ~0.1
depth ~5% of water column depth
http://www.nefsc.noaa.gov/epd/ocean/MainPage/lob/onepage.html
Instrument is mailed to the scientist and the data is downloaded to disk within a few days. Data is run through a series of Python programs to conduct range and delta checks and visual graphics. Spikes of more than X standard deviations are removed where X depends on the geographic location and season. Hardcopy plots are mailed to each participant after the annual download and archiving.
Yes
Unknown
Yes
No
There is approximately a week between when the fishermen hauls his gear w/the sensor and when the data arrives at my desk, gets processed, and loaded each year.
Other
One week, same as above, although we are currently working on a system to make eMOLT data collection in realtime where it would be telemetered and archived within minutes of the fisherman hauling his gear.
Archival of source data preserving unaltered collected data, Scheduled backups, Remote storage backups, Password protection
Environmental monitors on lobster traps (eMOLT): long-term observations of New EnglandâÂÂs bottom-water temperatures
2009-01-01
https://www.tandfonline.com/doi/abs/10.1080/1755876X.2009.11020106
VEMCO Minilog II-T
instrument
Temperature Data Logger
The Minilog-II-T fully submersible, 10-year temperature data logger measures and stores temperature at specified sampling intervals. Designed for monitoring in the harsh conditions of a deep marine environment (up to 500 metres), the Minilog-II-T is used in any application where temperature readings are desired. The MinilogII-T data logger is manufactured to withstand both fresh and saltwater environments.
Accuracy: +/- 0.1 degrees C
Resolution: 0.01 degrees C
Clock stability: +/- 1 minute per month
Onset HOBO TidbiT v2
instrument
Temperature Data Logger
Only 3x4 cm, the tiny waterproof TidbiT v2 data logger measures temperatures over a wide range, providing 12-bit resolution and ±0.2 °C accuracy.
Accuracy: +/- 0.2 degrees C
Resolution: 0.02 degrees C
Clock stability: +/- 1 minute per month
Withheld
33506
Entity
eMOLT
gov.noaa.nmfs.inport:25149
Patricia Jones
2015-05-27T16:57:52
Brian McGovern
2023-04-06T12:46:30
2016-07-18
Northeast Fisheries Science Center
NEFSC
166 Water Street
Woods Hole
MA
02543-1026
USA
(508)495-2000
http://www.nefsc.noaa.gov
8:00 a.m. to 4:30 p.m. Monday - Friday
1001
Public
No
2016-07-18
1 Year
2017-07-18